by Begle1 » Tue Sep 09, 2008 10:35 am
Cam, port, polish, O-ring and stud the heads, and run twins. Fueling and bottom end shouldn't be problems. You're going to need a bigger-than-OEM cooling system and a good intercooler.
You're basically going to need to have what PACCOOL has over on CumminsForum.
1990 D-250 Regular Cab: Tweaked injection pump, built transmission, a cataclysmic charlie foxtrot of electronics, the most intense street-ran water injection system in the country, and some more unique stuff.